The Adidas Ultra Boost “Triple Black” will be available in the U.S. on Dec. 1 via the brand’s Confirmed app for New York, marking the first time a performance sneaker has been sold this way. The shoe will also be available on adidas.com on the same date. Reservations for the sought-after colorway begin on Nov. 29.

But before the U.S. release is the Western Europe drop, which will have a limited number of pairs available via adidas.com on Nov. 19 at 10 a.m. CET.

On Wednesday, several colorways of the 2017 Ultra Boost styles surfaced on social media, posted on Instagram by user @sneakerprophet. The colorways boast a new Primeknit construction from the 2015 and 2016 iterations, featuring a sweater-esque pattern with horizontal striping, as well as translucent plastic cages. The colors featured on Instagram are gold, gray, taupe, tan, burgundy, blue, and blue and orange.

Adidas has not confirmed the release details for the displayed shoes.

The brand also recently unveiled that it is releasing a new Ultra Boost Uncaged made using marine plastic waste recovered through Parley for the Ocean’s interception and clean-up operations in coastal areas of the Maldives.